./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memset2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset2_-write.c -s /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 504b8754db5656e557502f2f9e958956c9b0cd94 ................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:01:19,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:19,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:19,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:19,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:19,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:19,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:19,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:19,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:19,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:19,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:19,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:19,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:19,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:19,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:19,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:19,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:19,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:19,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:19,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:19,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:19,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:19,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:19,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:19,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:19,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:19,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:19,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:19,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:19,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:19,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:19,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:19,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:19,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:19,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:19,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:19,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:19,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:19,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:19,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:19,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:19,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 09:01:19,891 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:19,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:19,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:19,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:19,893 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:19,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:19,893 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:19,894 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:01:19,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:01:19,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:19,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:19,894 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 09:01:19,894 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 09:01:19,895 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 09:01:19,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:19,895 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:19,905 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:19,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:19,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:19,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:19,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:19,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:19,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:19,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:19,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:01:19,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:01:19,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504b8754db5656e557502f2f9e958956c9b0cd94 [2019-10-22 09:01:19,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:19,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:19,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:19,959 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:19,960 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:19,960 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memset2_-write.c [2019-10-22 09:01:20,017 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer/data/6816c5b4a/e0b85dca847246f7a775de9ace30a429/FLAG92d18f763 [2019-10-22 09:01:20,383 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:20,383 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/sv-benchmarks/c/ldv-memsafety/memset2_-write.c [2019-10-22 09:01:20,389 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer/data/6816c5b4a/e0b85dca847246f7a775de9ace30a429/FLAG92d18f763 [2019-10-22 09:01:20,783 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer/data/6816c5b4a/e0b85dca847246f7a775de9ace30a429 [2019-10-22 09:01:20,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:20,788 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 09:01:20,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:20,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:20,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:20,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:20" (1/1) ... [2019-10-22 09:01:20,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4397ca16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:20, skipping insertion in model container [2019-10-22 09:01:20,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:20" (1/1) ... [2019-10-22 09:01:20,801 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:20,813 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:20,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:20,941 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:21,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:21,035 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:21,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:21 WrapperNode [2019-10-22 09:01:21,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:21,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:21,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:21,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:21,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:21" (1/1) ... [2019-10-22 09:01:21,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:21" (1/1) ... [2019-10-22 09:01:21,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:21" (1/1) ... [2019-10-22 09:01:21,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:21" (1/1) ... [2019-10-22 09:01:21,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:21" (1/1) ... [2019-10-22 09:01:21,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:21" (1/1) ... [2019-10-22 09:01:21,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:21" (1/1) ... [2019-10-22 09:01:21,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:21,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:21,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:21,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:21,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 09:01:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 09:01:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-22 09:01:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-22 09:01:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 09:01:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:01:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-22 09:01:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:01:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 09:01:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:21,249 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-22 09:01:21,302 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:21,302 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-22 09:01:21,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:21 BoogieIcfgContainer [2019-10-22 09:01:21,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:21,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:21,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:21,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:21,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:20" (1/3) ... [2019-10-22 09:01:21,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e776f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:21, skipping insertion in model container [2019-10-22 09:01:21,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:21" (2/3) ... [2019-10-22 09:01:21,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e776f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:21, skipping insertion in model container [2019-10-22 09:01:21,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:21" (3/3) ... [2019-10-22 09:01:21,310 INFO L109 eAbstractionObserver]: Analyzing ICFG memset2_-write.c [2019-10-22 09:01:21,326 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:21,332 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 09:01:21,344 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 09:01:21,363 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:21,363 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 09:01:21,365 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:21,366 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:21,371 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:21,371 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:21,371 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:21,371 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-22 09:01:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 09:01:21,390 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:21,391 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:21,393 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 09:01:21,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:21,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2019-10-22 09:01:21,403 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:21,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030421784] [2019-10-22 09:01:21,404 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:21,404 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:21,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:21,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030421784] [2019-10-22 09:01:21,542 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:21,542 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:01:21,543 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084803436] [2019-10-22 09:01:21,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:01:21,547 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:21,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:01:21,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:01:21,561 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2019-10-22 09:01:21,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:21,656 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-10-22 09:01:21,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:01:21,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-10-22 09:01:21,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:21,665 INFO L225 Difference]: With dead ends: 19 [2019-10-22 09:01:21,665 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 09:01:21,667 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:01:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 09:01:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-22 09:01:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 09:01:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-10-22 09:01:21,724 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2019-10-22 09:01:21,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:21,725 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-10-22 09:01:21,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:01:21,725 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-10-22 09:01:21,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 09:01:21,725 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:21,725 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:21,726 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 09:01:21,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:21,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2019-10-22 09:01:21,726 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:21,726 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925127174] [2019-10-22 09:01:21,726 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:21,727 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:21,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:21,792 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:21,792 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:01:21,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:01:21 BoogieIcfgContainer [2019-10-22 09:01:21,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:01:21,809 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:01:21,809 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:01:21,810 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:01:21,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:21" (3/4) ... [2019-10-22 09:01:21,812 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:01:21,843 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_093d038c-71a9-4f3b-ae33-d5d185a338d6/bin/uautomizer/witness.graphml [2019-10-22 09:01:21,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:01:21,845 INFO L168 Benchmark]: Toolchain (without parser) took 1057.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -138.3 MB). Peak memory consumption was 11.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:21,845 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:21,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:21,846 INFO L168 Benchmark]: Boogie Preprocessor took 36.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:21,847 INFO L168 Benchmark]: RCFGBuilder took 230.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:21,848 INFO L168 Benchmark]: TraceAbstraction took 505.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:21,848 INFO L168 Benchmark]: Witness Printer took 33.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:21,851 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 247.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 230.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 505.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 11.5 GB. * Witness Printer took 33.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] struct compstat cstats ; VAL [cstats={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 6 SDslu, 8 SDs, 0 SdLazy, 24 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...